Copper complex compounds of polyazo dyestuffs



Patented Apr; 16, 19.40

2,197,350" I oorPER ooMPLExooMPoUNns or" v I I POLYAZO DYIESTUFFS, sv Hans l- Sj chindhelm,-, Frankfort -on the -Main- I l Fechenheim, and Carl Theo Schultis, Bergemf near: .Frankfort on-the-Main, Germany, as

signon'to General Aniline & Film Corporation,

a, corporation of Delaware No Drawing; original application December 18;

1935, Serial No. 55,043. Divided and this application November 11, 1937, Serial No. 174,010.

ln qermany June 19, 1935 5 Claims (Cl.;960+14'5) The present application isra division of our application Serial No. 55,043, filed December 18, 1935, which relates-to polyazo dyestuffs; I

Our present invention relates ptolnewcopper 5 complex compounds of polyazo dyestufis.

' U. S. Patent No. 2,004,250 describes inter alia copper complex compounds of polyazo dyestuffs of the type:

(in which formula A indicates .a couplingv component, containing two'coupling positions,, B a

K coupling component which may be alkylated, and

being metallized).-

I According to the present invention valuable new copper complex compounds of a similar type are obtained by converting into their copper complex compounds polyazo dyestufis whichare obtainedby diazotizing aminoazo dyestufis of the,

type:

poundthus obtained with a middle component selected from the group consisting'of I and C a radicle of an aromatic amine, containing in I o-position to the amino group a group capable of further diazotizing the azo dyestufis formed and finally combining the diazo compound with a coupling componentwhich contains in o-position to the coupling position a group capable o-fbeingf;

metalliz ed;

tained of the general formula: g

I I The new copper complex compounds thus SOsH (wherein B has the above said signification, D

stands for the radicle of a middle component selected from the group consisting of:

O O-alkyl and sou;

'andE .for the radicle of a coupling component which contains in o-position to'the coupling position a group capable of being metallized dye vegetable fibers bright shades of excellent fastness to light. t

In order to further illustrate our invention the following examples are given, the parts being by weight and all temperatures in degrees centigrade, I I

' Ezrampl el Thediazo compound from 51.1, parts of k acid I I completath'e polyazo dyestuffis isolated by adde 1 ing sodium chloride to the reaction mass. l

r The polyazodyestuffythus obtained is -wh'en I dry a violet black.rpowder,' solublein conc'en trated sulfuric acid with areddiShJbrQWn a'nd in water with a greenish blue color. cotton bluish green shades.

When the dyestuff is heated to boiling for some hours in an aqueous solution in the presence of sodium acetate and copper sulfate, it is converted into the corresponding copper complex compound of the formula:

SOaH

It dyes 6 "b I V CHQN=N8N= NH s 03H Q HOaS SOaH COOH which is soluble in concentrated sulfuric acid with a violettish brown and in water with a yellowish green color and dyes cotton yellowish green shades of a particularfastness to light.

Example 2 When working as described in Example 1, but using as final component 30 parts of 1-.acetylamino-8-naphtholsulfonic acid the copper complex compound obtained of the formula:

SOaH

oi o NH.C0.CH:

dyes cotton olive green shades of a very good fastness to light. It dissolves in concentrated sulfuric acid with a violettish brown and in water with a yellowish green color.

When coupling the diazotized aminoazo dyestuff aminostilbene-disu1fonic-acid-azo-anisol with aminohydroquinone-dimethylether, diazotizing again and coupling finally with Z-naphthol- 3.6-disulfonic acid, a polyazo dyestufi is obtained which is well fixed'on cotton and dyes cotton bluish green shades. Its copper complex com pound of the formula:

dyes cotton olive shades of an excellent fastness to light. It dissolves in waterwith a'yellowish green and in concentrated sulfuric acid with a bluish violet color.

Similar dyestufis are obtained by starting from amino-azo dyestuffs obtained by coupling the 4-nitro-4-aminostilbene-2.2'-disulfonic acid with salicylic acid or arylamides of aceto acetic acid or pyrazolone derivatives and by subsequently reducingthe formed azodyestufis.

Weclaim:

1. Copper complex compounds of polyazo dyestuffs of the general formula:

(wherein B stands for the radicle of a coupling component selected from the groupv consisting of anisole, salicyclic acid, arylamides' of aceto acetic acid and'pyrazolones, D stands for the radicle of a middle component selected from the group consisting of:

0alkyl On I a a CH-QN=N 6 H038 NHQ SOaH 'COOH compound of the forwhich is when dry a dark powder, soluble in concentrated sulfuric acid with a brownish violet and in water with a green color, dyeing cotton yellowish green shades of a particular fastness to light.

3. The copper complex compound of the formula:

SOaH

G11 CHQN=N N=N soin S 03H S 0 11 which is when dry a dark powder, soluble in 0011-,

centrated sulfuric acid with a violettish brown and in water with a yellowish green color, dyeing cotton olive green shades of a very good fastness to light.

4. The copper complex compound of the formula:

SOaH

cu which is when dry a dark powder soluble in con- 'centrated sulfuric acid with a bloish violet and I On S 0311 component selected from the group consisting of anisole, salicyclic acid, arylamides of aceto acetic acid and pyrazolones, D stands for the radicle of a middle component selected irom the groub consisting of:

and

SOQH

and E stands forthe radicle of acoupling co'nrlponent of the naphthalene series which contains in o-position to the coupling positionfia group capable of being metallizecl which copper complex compoundsdye the vegetable fiber bright shades of an excellent fastness to light. I e

- HANS SCHINDHELM;

CARL THEO' SCHULTIS. 

